1901951996992 has 28 divisors (see below), whose sum is σ = 3787067212236. Its totient is φ = 947730337280.

The previous prime is 1901951996953. The next prime is 1901951996993. The reversal of 1901951996992 is 2996991591091.

It can be written as a sum of positive squares in 2 ways, for example, as 1163067343936 + 738884653056 = 1078456^2 + 859584^2 .

It is not an unprimeable number, because it can be changed into a prime (1901951996993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50694559 + ... + 50732062.

It is an arithmetic number, because the mean of its divisors is an integer number (135252400437).

Almost surely, 2^{1901951996992} is an apocalyptic number.

It is an amenable number.

1901951996992 is a deficient number, since it is larger than the sum of its proper divisors (1885115215244).

1901951996992 is a wasteful number, since it uses less digits than its factorization.

1901951996992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101426926 (or 101426916 counting only the distinct ones).

The product of its (nonzero) digits is 31886460, while the sum is 70.

The spelling of 1901951996992 in words is "one trillion, nine hundred one billion, nine hundred fifty-one million, nine hundred ninety-six thousand, nine hundred ninety-two".